/* GStreamer * Copyright (C) <2006> Wim Taymans <wim@fluendo.com> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* * Unless otherwise indicated, Source Code is licensed under MIT license. * See further explanation attached in License Statement (distributed in the file * LICENSE). * * Permission is hereby granted, free of charge, to any person obtaining a copy of * this software and associated documentation files (the "Software"), to deal in * the Software without restriction, including without limitation the rights to * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies * of the Software, and to permit persons to whom the Software is furnished to do * so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include "gstrtspext.h" GST_DEBUG_CATEGORY_STATIC (rtspext_debug); #define GST_CAT_DEFAULT (rtspext_debug) static GList *extensions; static gboolean gst_rtsp_ext_list_filter (GstPluginFeature * feature, gpointer user_data) { GstElementFactory *factory; guint rank; /* we only care about element factories */ if (!GST_IS_ELEMENT_FACTORY (feature)) return FALSE; factory = GST_ELEMENT_FACTORY (feature); if (!gst_element_factory_has_interface (factory, "GstRTSPExtension")) return FALSE; /* only select elements with autoplugging rank */ rank = gst_plugin_feature_get_rank (feature); if (rank < GST_RANK_MARGINAL) return FALSE; return TRUE; } void gst_rtsp_ext_list_init (void) { GST_DEBUG_CATEGORY_INIT (rtspext_debug, "rtspext", 0, "RTSP extension"); /* get a list of all extensions */ extensions = gst_registry_feature_filter (gst_registry_get_default (), (GstPluginFeatureFilter) gst_rtsp_ext_list_filter, FALSE, NULL); } GstRTSPExtensionList * gst_rtsp_ext_list_get (void) { GstRTSPExtensionList *result; GList *walk; result = g_new0 (GstRTSPExtensionList, 1); for (walk = extensions; walk; walk = g_list_next (walk)) { GstElementFactory *factory = GST_ELEMENT_FACTORY (walk->data); GstElement *element; element = gst_element_factory_create (factory, NULL); if (!element) { GST_ERROR ("could not create extension instance"); continue; } GST_DEBUG ("added extension interface for '%s'", GST_ELEMENT_NAME (element)); result->extensions = g_list_prepend (result->extensions, element); } return result; } void gst_rtsp_ext_list_free (GstRTSPExtensionList * ext) { GList *walk; for (walk = ext->extensions; walk; walk = g_list_next (walk)) { GstRTSPExtension *elem = (GstRTSPExtension *) walk->data; gst_object_unref (GST_OBJECT_CAST (elem)); } g_list_free (ext->extensions); g_free (ext); } gboolean gst_rtsp_ext_list_detect_server (GstRTSPExtensionList * ext, GstRTSPMessage * resp) { GList *walk; gboolean res = TRUE; for (walk = ext->extensions; walk; walk = g_list_next (walk)) { GstRTSPExtension *elem = (GstRTSPExtension *) walk->data; res = gst_rtsp_extension_detect_server (elem, resp); } return res; } GstRTSPResult gst_rtsp_ext_list_before_send (GstRTSPExtensionList * ext, GstRTSPMessage * req) { GList *walk; GstRTSPResult res = GST_RTSP_OK; for (walk = ext->extensions; walk; walk = g_list_next (walk)) { GstRTSPExtension *elem = (GstRTSPExtension *) walk->data; res = gst_rtsp_extension_before_send (elem, req); } return res; } GstRTSPResult gst_rtsp_ext_list_after_send (GstRTSPExtensionList * ext, GstRTSPMessage * req, GstRTSPMessage * resp) { GList *walk; GstRTSPResult res = GST_RTSP_OK; for (walk = ext->extensions; walk; walk = g_list_next (walk)) { GstRTSPExtension *elem = (GstRTSPExtension *) walk->data; res = gst_rtsp_extension_after_send (elem, req, resp); } return res; } GstRTSPResult gst_rtsp_ext_list_parse_sdp (GstRTSPExtensionList * ext, GstSDPMessage * sdp, GstStructure * s) { GList *walk; GstRTSPResult res = GST_RTSP_OK; for (walk = ext->extensions; walk; walk = g_list_next (walk)) { GstRTSPExtension *elem = (GstRTSPExtension *) walk->data; res = gst_rtsp_extension_parse_sdp (elem, sdp, s); } return res; } GstRTSPResult gst_rtsp_ext_list_setup_media (GstRTSPExtensionList * ext, GstSDPMedia * media) { GList *walk; GstRTSPResult res = GST_RTSP_OK; for (walk = ext->extensions; walk; walk = g_list_next (walk)) { GstRTSPExtension *elem = (GstRTSPExtension *) walk->data; res = gst_rtsp_extension_setup_media (elem, media); } return res; } gboolean gst_rtsp_ext_list_configure_stream (GstRTSPExtensionList * ext, GstCaps * caps) { GList *walk; gboolean res = TRUE; for (walk = ext->extensions; walk; walk = g_list_next (walk)) { GstRTSPExtension *elem = (GstRTSPExtension *) walk->data; res = gst_rtsp_extension_configure_stream (elem, caps); } return res; } GstRTSPResult gst_rtsp_ext_list_get_transports (GstRTSPExtensionList * ext, GstRTSPLowerTrans protocols, gchar ** transport) { GList *walk; GstRTSPResult res = GST_RTSP_OK; for (walk = ext->extensions; walk; walk = g_list_next (walk)) { GstRTSPExtension *elem = (GstRTSPExtension *) walk->data; res = gst_rtsp_extension_get_transports (elem, protocols, transport); } return res; } GstRTSPResult gst_rtsp_ext_list_stream_select (GstRTSPExtensionList * ext, GstRTSPUrl * url) { GList *walk; GstRTSPResult res = GST_RTSP_OK; for (walk = ext->extensions; walk; walk = g_list_next (walk)) { GstRTSPExtension *elem = (GstRTSPExtension *) walk->data; res = gst_rtsp_extension_stream_select (elem, url); } return res; } void gst_rtsp_ext_list_connect (GstRTSPExtensionList * ext, const gchar * detailed_signal, GCallback c_handler, gpointer data) { GList *walk; for (walk = ext->extensions; walk; walk = g_list_next (walk)) { GstRTSPExtension *elem = (GstRTSPExtension *) walk->data; g_signal_connect (elem, detailed_signal, c_handler, data); } } GstRTSPResult gst_rtsp_ext_list_receive_request (GstRTSPExtensionList * ext, GstRTSPMessage * req) { GList *walk; GstRTSPResult res = GST_RTSP_ENOTIMPL; for (walk = ext->extensions; walk; walk = g_list_next (walk)) { GstRTSPExtension *elem = (GstRTSPExtension *) walk->data; res = gst_rtsp_extension_receive_request (elem, req); if (res != GST_RTSP_ENOTIMPL) break; } return res; }